# Reproduce results of Figure 1 and results in Example 4.2
# R version 4.1.1 (2021-08-10)
#
# BM_StandardErrors.R is from Imbens and Kolesár (2016),
# https://github.com/kolesarm/Robust-Small-Sample-Standard-Errors
# 
# robust_summary.R is from
# https://economictheoryblog.com/2016/08/07/robust-standard-errors-in-r-function/
#
# Data is from replication package for Angrist and Lava (2009)
# http://doi.org/10.3886/E113319V1

# Run al9.R to generate Figure 1 and results in text